Myself and my Sister-in-law usually hand it to the doctor or dentist each visit.
The front desk usually prints for the doctor's/dentist's chart; if tests ordered, they can later put results on it if I give it to them
It isn't too hard to figure out that it plugs into any usb drive.
when you insert it in any usb drive, it pops up an html web page with your info you entered.
It isn't an uncommon device, though most pharmacies sell the keychain type version made by other companies, the bracelet is easier to notice.
As more and more physicians etc move to electronic medical records, you'll see this type thing more often.
http://www.google.com/search?q=usb+driv ... =firefox-a" onclick="window.open(this.href);return false;
The metal bracelets don't have enough room to list all my/my sister-in-law's allergies/medical conditions etc.
We'd need 200 metal bracelets each, then, they'd overlook the list of meds we can't take or her catalepsy or something due to too many bracelets ... and they'd have to fumble looking for a doctor's business card and blood type where I wrote it on a card in 1970 and it faded in a wallet